Engineering topics
Publications and source records attributed to Seki, Munezo.
Correlations between ultraviolet extinction and visual polarization are studied. No correlations are found for 272 sampled stars. UV extinction and visual polarization are quite independent phenomena.
Taking into account the tight coupling of grain axis with angular momentum due to effective dissipation of rotation energy, the alignment of spheroidal grains was investigated by paramagnetic relaxation. Alignment degree will be significantly improved in diffuse clouds. The inclusions of superparamagnetic (SPM) substances may play a key role in grain alignment in dark clouds as well as in diffuse clouds.